Oxyhydrogen-gas jet.



TE STA f ive?" l? Lao Emmanuel. entrons, creams, swiss, Assioivon, er essieirsrsnraro SOCIT 'nain moomnsoomi solemn nous Liaisons :ons rlaoonnns oneness onions, or tennis,

Specication of letters 'Estant nomination filed Detener 8, 1995. Serial No. fl'tlf.

To all 'whom it may concern Be it known that EMivrANn-in Ail-Morir, a citizen of the lle/public of France, and resi dent oi" 43 Rue bt..Laeare, Paris, France, have invented an Qjnyhydrogen-Gas Jet, ol which the following is a description.

This invention relates to lolovvpipes Worlring with a liquid fuel and particularly to blovvpipes u sed for cutting and Welding metals.

The blowpipes hitherto employed generally utilise oxygen together Witligaseous combustibles such' as illuminating gas, acetlene, liydrog'en and the like. Lt these com us'tble gases are under pressure, they will readily mix with the oxygen which is also under pressure; if, on the other hand, these combustible gases are not under pressure, it is necessary to entrain them by the, liovv of the oxygen supplied throu-h the agency of a device known as the Gilliard injector and ordinarily employed in blowpipes for welding; in the case of liquid combustibles, liovvever, if the method of entrainlnent referred to above is employed, the following dili` cult is encountered. ln order to gasily the liquid after its entrainment, it must be heated by means of a tiame., New, this lieating necessarily communicates heat to the several parts'of the injector and tlws partially ga'sifes the liquid combustible tefore it enters vthe injector itself, which entirely disturbs the' uantity of the combustible flowing throng the apparatus; in addition to this theheatssupplied by conduction eze,

pands the various parts of the injector and thereby produces a. variation in the dimensions o the parts Wliicli also disturbs the regulation ofthe apparatus. The heating7 is however, absolutel;y necessary in order to asify the liquid combustible and produce an intimate mixing of the combustible mixture; the heatin also presents the advantage of raisi ig t e combustion temperature of the mixture.

ln accordance with the present invention a special arrangement of the Gidard in jector is employed, and it is isolated from the hot parts of the apparatus.

The accompanying drawing illustrates one mode of carrying the present invention into practice. l

Instead of l,the device generallyVA adopted in blowpipes', `where the gas is supplied undei' pressure through a central nozzle and carries along in a' restricted tube the lgas at atmospheric pressure., the liquid combustible is supplied by a :tube a through the central nozzle i and the gen under pressure through the annui mlissage B. lctrolcnm spiritv for caramelo may be used as the liquid comliustilsle.- low tlie oxygen compressed at a high pressure ('or .instance in the usual cylinders,` Erst expands in the reducing valve of the cylinder and reaches the injector through the regulating screw valve V on the blorpipe, which valve is ar# ranged at tlie inlet to toe injector andA may also'serve as a pressure reducer, The reduction in pressure is of a cutting lvloivpipe {as more convenient for hand bloivpipes) in order to permit/ of the use of the saine supply oi oxygen ior 'the cutting and the lieatmo. The oxygen, after expanding tlmougli tlio screw valve as aforesaid, passes around the injector in a*v very cold state, surrounds it with a'gaseous envelop and so insula'es perfectly from -tlie rest of the apparatus which may 'then 'lie heated desired.

lin order to obtain a still more complete caloriiic insulation lietw mi the injector and the tube C ivlric lie. .ed by a lanie sup lied for instance by a iirancli pipe D, as neen iound advent sous to constitute the whole or a portion of tlie para ill of a metal which is a had conductor of heat, suoli as German silverf nickel y., or the like, or o interpose between ill part C and the tube a washer lil of a substance Wilicli is a oud conductor of lieat. i

ly using tl'ie two means referred to above simultaneously the 'temperature of the injector can be kept constant so that the entrainmcnt of the liqiiid combustible is constant also. r his entrainment is .regulated at the beginning of the operation by means of the screw K, 'the extremity of which fills the outlet from the injector more or less compl-Usl f.

The liquid combustible may Y' sucked directly from an onen ves supplied from avessol i:

under pressure in, co.

in the case ready stated 'in order to efficient operation oi' the ntomizer; the arrangement described above will enable them to be realized.

The arrangement described above for 1nsuluting the injector cslorifically is applinecessary to insulate en injector caloriiic-4 ally.

I claim: I

l. A process of producing gaseous mixture of liquid fuel und oxygen in a blow pipe, seid process consisting in feeding to the blow pipe the liquid 'fuel and cold compressed oxygen; mixing the oxygen with the fuel; and heating the resulting mixture in `order to vaporize the iuel.-

2, A process oi producing gaseous mixture of liquid fuel und oxygen in `eblow pipe, seid process consisting in feeding to the blow pipe the liquidv fuel und cold compressed oxygen; mixing the oxygen with the fuel; heating the resulting mixture in order to Veporize the fuel; and insulating the heet or" said beating from the mixture during seid' mixing.

3. A process of producing gaseous mixtures of oxygen and liquid fuel in e/blowpipe7 said process consisting in causing compressed oxygen to pertlyexpend whereby it becomes cold; circulating the cold oxygen in indirect contact with ,the liquid fuel; mixing tlie oxygen with the liquid fuel; and heating the mixture of oxy en and liquid fuel in order to veporize the liquid fuel.

e. A. process of produein gaseous mixtures. of oxygen and liquid el in e. blowpipe, said process consisting in causin'r compressed 'oxygcn partly expand wereby it becomes celdyclrculatin'g the cold oxygen in indirect contsct withv tbeliquid fuel;

the oxygen with the liquid fuel;

mixing heating the mixture ofA oxygen and-liquid fuel in order. to vaporize the liquid fuel; and insuletin the heet of seid heating from the mixture uring seid mixing.

5. A method for producino' gaseous mixtures of oxygen and liquid tuel in a blowpipe, seid process consisting in causing com-y pressed oxygen to partly expend whereby it becomes cold; conducting it around a tube'through which liquid fuel passes; mix-- ing the oxygen and the liquid fuel; forcing them into a second tube in which the fuel is Vaporized; und burning part of the gaseous mixture Voft oxygen und fuel to heut the mixture of oxygen and liquid fuel thus effecting tbe above veporizetion of the uel.

6. A process of producing gaseous mixtures of oxygen and liquid fuel in a. blow-- pipe suid process consisting in ceusirg compressed oxygen to partly expend. whereby it becomes cold; conductin it into e. chamber; eeringthe liquid fuel t rough s. nube inthe central `port or" ltine chamber; lfdrcing the oxygen and the liouid fuel through en injector et' one end oi seid chamber end tube; passing 'the vmixture of oxygen eno liquid fuel to s second tube; heating the second tube; und burning peri; of tbe gaseous mixture of oxygen and uel to heat tbe mixture of oxygen and liquid fuel, thus electing the vaporizetion of tbe fuel.

7. A process of producing gaseous mixtures of oxygen and liquid fuel in e. blowpipe, said process consisting in ceusin compressed oxygen to partly expend., W. ereby it becomes cold; conducting it into e. chum;n ber; feeding the liquid fuel: through u tube in the central part of tbe chamber; forcing the oxygen and the liquid iuel through en injector et one end of seid chamber and tube; regulating the flow of liquid uel through the injector; passing the mixture'l of oxygen and liquid fuel to s. second tube; heating the second tube; end burning part of the gaseous mixture or' oxygen und fuel to heet the mixture of oxygen und liquid fuel thus efecting the above vepurizetion of the fuel.

8. In e ges jet apparatus, the combination of n body portion having therein un exiel passage open at one end und buying e lateral bore near the rearpart thereof; u vaporising tube secured to seid cody et its open end; u conducting tube in seid passage und having e reduced forward end, seid tube being spaced: from the body portion; e needle screw in seid conducting" tube end forming therewith a. thin cylindrical space extending to seid reduced end; sud ineens for conducting oxygen under pressure to said bore to permit the oxygen to expend around scid tube in indirect contact with .j

the fuel in seid thin cylindricul space.

9. In a gas jet epperstustlie combina,tionv of -a body portion having therein en exiel passage open at one end and basing u let-eral bore neer t-lue rear port thereof; uyeporizing tube secured to seid vbody et its open end; e conducting tube inseid passageA and having e reduced forward end, Suid tube being' spaced from the body portion; .u needle screw in seid conducting tube und forming therewith a thin cylindricnl specs extending to seid reduced end; means for conducting oxygen under pressure to seid bore to permit the oxygen to expand around said tube in indirectcontact Witlrtlie 'uel in scid tliin cylindrie space; und e valve in seid last-named means. i

l0. in n ges jetV apparatus, the combinetiou of e 'body portion ybuying therein en axial passage open ttt-one end. end having 13o Loef/328e lateral bore neer the rear part thereof, the diameter of seid bore at. its outlet end being less than one tenth of its princionl diameter'; a Vaporizing tube secured to said body :it its open end a conducting tube .in said passage and having a reduced forward end, said tube being spaced from the body portiene; a needle screw in Suid conducting tube and forming therewith a thin cylindrical.

Space extending to said reduced end; audi menue for conducting oxygen under pres- EMMANUEL AUMONT.

lV] messes DEAN B. MASON, ANDR HELBROUNE. 

